At the recent International Collectibles and Antiques Show in Charlotte, N.C., dealers spread out items in different booths. The warehouse looks like an old-school flea market, except for Joy Shivar's booth.

She's on her laptop, demonstrating JustAJoy.com. Enter a name in a database, and see if something hits.

The website bills itself as a family heirloom exchange for sellers and buyers. That's not unusual — there is eBay, after all.